The two-stage load of the reinforced concrete column with reinforced concrete cover involves two parts, one before strengthened and another after strengthened.
外包钢筋混凝土加固受压柱是一个两阶段受力问题，包括加固前和加固后两部分。
The slot elements are set up to simulate slot between lining and rock mass and the 3 D elastoplastic FEM is adopted with multi stage load and changible stiffness iteration.
在压力隧洞充水运行时，对衬砌与围岩之间的接缝采用接缝空腔单元模拟。
The slot elements are set up to simulate slot between lining and rock mass and the 3 D elastoplastic FEM is adopted with multi stage load and changible stiffness iteration.
在压力隧洞充水运行时，对衬砌与围岩之间的接缝采用接缝空腔单元模拟。
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